Ink jet printing apparatus and print position setting method

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Details

C347S019000

Reexamination Certificate

active

11202094

ABSTRACT:
An ink jet printing apparatus and a print position adjusting method capable of easily adjusting a relative print position between nozzle lines are provided. Images are printed on a print medium in a drive mode A and a drive mode B by using a print head which has first and second nozzle groups, each including a plurality of ink ejection nozzle lines. In the drive mode A, only one of the first and second nozzle groups is driven during one scan of the print head. In the drive mode B, the first and second nozzle groups are driven at different timings during one scan of the print head. A print position adjust value for adjusting a relative print position between the nozzle lines in the drive mode A is retrieved. Depending on whether the print position adjust value is even or odd, a print position correction value for the first nozzle group and a print position correction value for the second nozzle group are determined.

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